/*
// Licensed to Julian Hyde under one or more contributor license
// agreements. See the NOTICE file distributed with this work for
// additional information regarding copyright ownership.
//
// Julian Hyde licenses this file to you under the Apache License,
// Version 2.0 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
 */
package org.olap4j.transform;

import org.olap4j.*;
import org.olap4j.metadata.Member;

import java.util.ArrayList;
import java.util.List;

/**
 * Various helper functions for MDX query transforms.
 * 
 * <p>
 * This class is intentionally package-protected. It is NOT part of the public olap4j API.
 * 
 * @author etdub
 * @since Aug 7, 2008
 */
class TransformUtil {

	public static CellSetAxis getCellSetAxisFromCellSet(Axis axis, CellSet cellSet) {
		for (CellSetAxis a : cellSet.getAxes()) {
			if (a.getAxisOrdinal() == axis) {
				return a;
			}
		}

		// axis not found
		throw new IndexOutOfBoundsException();
	}

	public static Position getPositionFromCellSet(Axis axis, int positionOrdinalInAxis, CellSet cellSet) {
		CellSetAxis a = getCellSetAxisFromCellSet(axis, cellSet);

		return a.getPositions().get(positionOrdinalInAxis);
	}

	public static Member getMemberFromCellSet(Axis axis, int positionOrdinalInAxis, int memberOrdinalInPosition,
			CellSet cellSet) {
		Position p = getPositionFromCellSet(axis, positionOrdinalInAxis, cellSet);
		return p.getMembers().get(memberOrdinalInPosition);
	}

	public static List<Member> getPathToMember(Position p, int memberOrdinalInPosition) {
		List<Member> pathToMember = new ArrayList<Member>();
		for (int i = 0; i < memberOrdinalInPosition; i++) {
			pathToMember.add(p.getMembers().get(i));
		}

		return pathToMember;
	}
}

// End TransformUtil.java
